ISHS Acta Horticulturae 484: Eucarpia Symposium on Fruit Breeding and Genetics
INHERITANCE AND LINKAGE OF ISOZYME LOCI IN PEAR |
| Authors: | E. Chevreau, S. Leuliette, M. Gallet |
| Keywords: | Pyrus communis |
| Abstract:
The polymorphism of 11 enzymes was analysed in progenies from 11 controlled crosses between pear varieties, using acrylamide and starch gels. Twenty-two loci could be identified and segregation could be scored for 20 of them. Three pairs of duplicated loci forming intergenic hybrid bands were detected. They correspond to equivalent duplicated genes in apple. A total of 49 active alleles and a null one were identified. Joint segregation analysis revealed three linkage groups, which could all be related to existing groups on the apple map. The conservation of isozyme patterns, duplicated genes and linkage groups indicates a high degree of synteny between apple and pear. | |
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